Adding Uno support (updated)

.gitignore

@@ -348,3 +348,4 @@ MigrationBackup/
 
 # Ionide (cross platform F# VS Code tools) working folder
 .ionide/
+*.editorconfig

samples/MvvmSample.Core/Helpers/MarkdownHelper.cs

@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace MvvmSample.Helpers
+{
+    /// <summary>
+    /// A simple class to help with basic operations on markdown documents.
+    /// </summary>
+    public static class MarkdownHelper
+    {
+        /// <summary>
+        /// Gets all the paragraphs in a given markdown document.
+        /// </summary>
+        /// <param name="text">The input markdown document.</param>
+        /// <returns>The raw paragraphs from <paramref name="text"/>.</returns>
+        public static IReadOnlyDictionary<string, string> GetParagraphs(string text)
+        {
+            return
+                Regex.Matches(text, @"(#+ ([^\n]+)[^#]+)", RegexOptions.Singleline)
+                .OfType<Match>()
+                .ToDictionary(
+                    m => m.Groups[2].Value.Trim().Replace("&lt;", "<"),
+                    m => m.Groups[1].Value.Trim().Replace("&lt;", "<").Replace("[!WARNING]", "**WARNING:**"));
+        }
+    }
+}

samples/MvvmSample.Core/Models/Post.cs

@@ -0,0 +1,78 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json;
+
+namespace MvvmSample.Models
+{
+    /// <summary>
+    /// A class for a query for posts in a given subreddit.
+    /// </summary>
+    public class PostsQueryResponse
+    {
+        /// <summary>
+        /// Gets or sets the listing data for the response.
+        /// </summary>
+        [JsonProperty("data")]
+        public PostListing Data { get; set; }
+    }
+
+    /// <summary>
+    /// A class for a Reddit listing of posts.
+    /// </summary>
+    public class PostListing
+    {
+        /// <summary>
+        /// Gets or sets the items in this listing.
+        /// </summary>
+        [JsonProperty("children")]
+        public IList<PostData> Items { get; set; }
+    }
+
+    /// <summary>
+    /// A wrapping class for a post.
+    /// </summary>
+    public class PostData
+    {
+        /// <summary>
+        /// Gets or sets the <see cref="Post"/> instance.
+        /// </summary>
+        [JsonProperty("data")]
+        public Post Data { get; set; }
+    }
+
+    /// <summary>
+    /// A simple model for a Reddit post.
+    /// </summary>
+    public class Post
+    {
+        /// <summary>
+        /// Gets or sets the title of the post.
+        /// </summary>
+        [JsonProperty("title")]
+        public string Title { get; set; }
+
+        /// <summary>
+        /// Gets or sets the URL to the post thumbnail, if present.
+        /// </summary>
+        [JsonProperty("thumbnail")]
+        public string Thumbnail { get; set; }
+
+        /// <summary>
+        /// Gets the text of the post.
+        /// </summary>
+        /// <remarks>
+        /// Here we're just hardcoding some sample text to simplify how posts are displayed.
+        /// Normally, not all posts have a self text post available.
+        /// </remarks>
+        [JsonIgnore]
+        public string SelfText { get; } = string.Join(" ", Enumerable.Repeat(
+@"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
+Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
+Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
+Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.", 20));
+    }
+}

samples/MvvmSample.Core/MvvmSample.Core.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="MSBuild.Sdk.Extras">
+
+  <PropertyGroup>
+	  <TargetFrameworks>netstandard2.0</TargetFrameworks>
+	  <LangVersion>8.0</LangVersion>
+  </PropertyGroup>
+	<ItemGroup>
+    <PackageReference Include="Microsoft.Toolkit.Mvvm" Version="7.0.0-preview4" />
+    <PackageReference Include="Nito.AsyncEx.Coordination" Version="5.1.0" />
+    <PackageReference Include="Refit" Version="5.2.4" />
+    <PackageReference Include="Uno.UI" Version="3.4.0" />
+  </ItemGroup>
+</Project>

samples/MvvmSample.Core/Services/IFileService.cs

@@ -0,0 +1,27 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.IO;
+using System.Threading.Tasks;
+
+namespace MvvmSample.Services
+{
+    /// <summary>
+    /// The default <see langword="interface"/> for a service that handles files.
+    /// </summary>
+    public interface IFilesService
+    {
+        /// <summary>
+        /// Gets the path of the installation directory.
+        /// </summary>
+        string InstallationPath { get; }
+
+        /// <summary>
+        /// Gets a readonly <see cref="Stream"/> for a file at a specified path.
+        /// </summary>
+        /// <param name="path">The path of the file to retrieve.</param>
+        /// <returns>The <see cref="Stream"/> for the specified file.</returns>
+        Task<Stream> OpenForReadAsync(string path);
+    }
+}

samples/MvvmSample.Core/Services/IRedditService.cs

@@ -0,0 +1,23 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Threading.Tasks;
+using MvvmSample.Models;
+using Refit;
+
+namespace MvvmSample.Services
+{
+    /// <summary>
+    /// An interface for a simple Reddit service.
+    /// </summary>
+    public interface IRedditService
+    {
+        /// <summary>
+        /// Get a list of posts from a given subreddit
+        /// </summary>
+        /// <param name="subreddit">The subreddit name.</param>
+        [Get("/r/{subreddit}/.json")]
+        Task<PostsQueryResponse> GetSubredditPostsAsync(string subreddit);
+    }
+}

samples/MvvmSample.Core/Services/ISettingsService.cs

@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Diagnostics.Contracts;
+
+namespace MvvmSample.Services
+{
+    /// <summary>
+    /// The default <see langword="interface"/> for the settings manager used in the app.
+    /// </summary>
+    public interface ISettingsService
+    {
+        /// <summary>
+        /// Assigns a value to a settings key.
+        /// </summary>
+        /// <typeparam name="T">The type of the object bound to the key.</typeparam>
+        /// <param name="key">The key to check.</param>
+        /// <param name="value">The value to assign to the setting key.</param>
+        void SetValue<T>(string key, T value);
+
+        /// <summary>
+        /// Reads a value from the current <see cref="IServiceProvider"/> instance and returns its casting in the right type.
+        /// </summary>
+        /// <typeparam name="T">The type of the object to retrieve.</typeparam>
+        /// <param name="key">The key associated to the requested object.</param>
+        [Pure]
+        T GetValue<T>(string key);
+    }
+}

samples/MvvmSample.Core/ViewModels/AsyncRelayCommandPageViewModel.cs

@@ -0,0 +1,26 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Threading.Tasks;
+using Microsoft.Toolkit.Mvvm.Input;
+
+namespace MvvmSample.ViewModels
+{
+    public class AsyncRelayCommandPageViewModel : SamplePageViewModel
+    {
+        public AsyncRelayCommandPageViewModel()
+        {
+            DownloadTextCommand = new AsyncRelayCommand(DownloadTextAsync);
+        }
+
+        public IAsyncRelayCommand DownloadTextCommand { get; }
+
+        private async Task<string> DownloadTextAsync()
+        {
+            await Task.Delay(3000); // Simulate a web request
+
+            return "Hello world!";
+        }
+    }
+}

samples/MvvmSample.Core/ViewModels/IocPageViewModel.cs

@@ -0,0 +1,10 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace MvvmSample.ViewModels
+{
+    public class IocPageViewModel : SamplePageViewModel
+    {
+    }
+}

samples/MvvmSample.Core/ViewModels/MessengerPageViewModel.cs

@@ -0,0 +1,89 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.Toolkit.Mvvm.ComponentModel;
+using Microsoft.Toolkit.Mvvm.Messaging;
+using Microsoft.Toolkit.Mvvm.Messaging.Messages;
+
+namespace MvvmSample.ViewModels
+{
+    public class MessengerPageViewModel : SamplePageViewModel
+    {
+        public UserSenderViewModel SenderViewModel { get; } = new UserSenderViewModel();
+
+        public UserReceiverViewModel ReceiverViewModel { get; } = new UserReceiverViewModel();
+
+        // Simple viewmodel for a module sending a username message
+        public class UserSenderViewModel : ObservableRecipient
+        {
+            private string username = "Bob";
+
+            public string Username
+            {
+                get => username;
+                private set => SetProperty(ref username, value);
+            }
+
+            protected override void OnActivated()
+            {
+                Messenger.Register<CurrentUsernameRequestMessage>(this, (r, m) => m.Reply(Username));
+            }
+
+            public void SendUserMessage()
+            {
+                Username = Username == "Bob" ? "Alice" : "Bob";
+
+                Messenger.Send(new UsernameChangedMessage(Username));
+            }
+        }
+
+        // Simple viewmodel for a module receiving a username message
+        public class UserReceiverViewModel : ObservableRecipient
+        {
+            private string username = "";
+
+            public string Username
+            {
+                get => username;
+                private set => SetProperty(ref username, value);
+            }
+
+            protected override void OnActivated()
+            {
+                Messenger.Register<UsernameChangedMessage>(this, (r, m) => Username = m.Value);
+            }
+        }
+
+        private string username;
+
+        public string Username
+        {
+            get => username;
+            private set => SetProperty(ref username, value);
+        }
+
+        public void RequestCurrentUsername()
+        {
+            Username = WeakReferenceMessenger.Default.Send<CurrentUsernameRequestMessage>();
+        }
+
+        public void ResetCurrentUsername()
+        {
+            Username = null;
+        }
+
+        // A sample message with a username value
+        public sealed class UsernameChangedMessage : ValueChangedMessage<string>
+        {
+            public UsernameChangedMessage(string value) : base(value)
+            {
+            }
+        }
+
+        // A sample request message to get the current username
+        public sealed class CurrentUsernameRequestMessage : RequestMessage<string>
+        {
+        }
+    }
+}

samples/MvvmSample.Core/ViewModels/ObservableObjectPageViewModel.cs

@@ -0,0 +1,41 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Threading.Tasks;
+
+namespace MvvmSample.ViewModels
+{
+    public class ObservableObjectPageViewModel : SamplePageViewModel
+    {
+        private string name;
+
+        /// <summary>
+        /// Gets or sets the name to display.
+        /// </summary>
+        public string Name
+        {
+            get => name;
+            set => SetProperty(ref name, value);
+        }
+
+        private TaskNotifier myTask;
+
+        /// <summary>
+        /// Gets or sets the name to display.
+        /// </summary>
+        public Task MyTask
+        {
+            get => myTask;
+            private set => SetPropertyAndNotifyOnCompletion(ref myTask, value);
+        }
+
+        /// <summary>
+        /// Simulates an asynchronous method.
+        /// </summary>
+        public void ReloadTask()
+        {
+            MyTask = Task.Delay(3000);
+        }
+    }
+}